Import Geant4 8.1.0 source tree
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Gabriele Cosmo
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//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $Id: G4XXXSGViewer.cc,v 1.3 2006/06/29 21:27:42 gunter Exp $
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// GEANT4 tag $Name: geant4-08-01 $
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//
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//
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// John Allison 10th March 2006
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// A template for a sophisticated graphics driver with a scene graph.
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//?? Lines beginning like this require specialisation for your driver.
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#ifdef G4VIS_BUILD_XXXSG_DRIVER
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#include "G4XXXSGViewer.hh"
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#include "G4VSceneHandler.hh"
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#include "G4XXXSGSceneHandler.hh"
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#include <fstream>
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G4XXXSGViewer::G4XXXSGViewer
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(G4VSceneHandler& sceneHandler, const G4String& name):
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G4VViewer(sceneHandler, sceneHandler.IncrementViewCount(), name)
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{}
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G4XXXSGViewer::~G4XXXSGViewer() {}
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void G4XXXSGViewer::SetView() {
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//#ifdef G4XXXSGDEBUG
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G4cout << "G4XXXSGViewer::SetView() called." << G4endl;
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//#endif
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}
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void G4XXXSGViewer::ClearView() {
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//#ifdef G4XXXSGDEBUG
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G4cout << "G4XXXSGViewer::ClearView() called." << G4endl;
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//#endif
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}
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void G4XXXSGViewer::DrawView() {
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//#ifdef G4XXXSGDEBUG
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G4cout << "G4XXXSGViewer::DrawView() called." << G4endl;
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//#endif
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// First, a view should decide when to re-visit the G4 kernel.
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// Sometimes it might not be necessary, e.g., if the scene is stored
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// in a graphical database (e.g., OpenGL's display lists) and only
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// the viewing angle has changed. But graphics systems without a
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// graphical database will always need to visit the G4 kernel.
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// The fNeedKernelVisit flag might have been set by the user in
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// /vis/viewer/rebuild, but if not, make decision and set flag only
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// if necessary...
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if (!fNeedKernelVisit) KernelVisitDecision();
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G4bool kernelVisitWasNeeded = fNeedKernelVisit; // Keep (ProcessView resets).
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ProcessView (); // Clears store and processes scene only if necessary.
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if (kernelVisitWasNeeded) {
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// Some systems, notably OpenGL, can draw while re-building, so
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// there might not be a need to draw from store again here. But
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// in this case...
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DrawFromStore("G4XXXSGViewer::DrawView");
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} else {
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DrawFromStore("G4XXXSGViewer::DrawView");
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}
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// ...before finally...
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FinishView (); // Flush streams and/or swap buffers.
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}
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void G4XXXSGViewer::ShowView() {
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//#ifdef G4XXXSGDEBUG
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G4cout << "G4XXXSGViewer::ShowView() called." << G4endl;
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//#endif
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// This is what you should see...
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DrawFromStore("G4XXXSGViewer::ShowView");
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}
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void G4XXXSGViewer::KernelVisitDecision () {
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// If there's a significant difference with the last view parameters
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// of either the scene handler or this viewer, trigger a rebuild.
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typedef taj::tree<G4String> SceneGraph;
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typedef taj::tree<G4String>::iterator SceneGraphIterator;
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SceneGraph& sceneGraph =
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static_cast<G4XXXSGSceneHandler&>(fSceneHandler).fSceneGraph;
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if (sceneGraph.size() == 3 // I.e., only the root nodes.
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|| CompareForKernelVisit(fLastVP)) {
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NeedKernelVisit (); // Sets fNeedKernelVisit.
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}
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fLastVP = fVP;
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}
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G4bool G4XXXSGViewer::CompareForKernelVisit(G4ViewParameters& lastVP)
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{
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// Typical comparison. Taken from OpenGL.
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if (
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(lastVP.GetDrawingStyle () != fVP.GetDrawingStyle ()) ||
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(lastVP.GetRepStyle () != fVP.GetRepStyle ()) ||
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(lastVP.IsCulling () != fVP.IsCulling ()) ||
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(lastVP.IsCullingInvisible () != fVP.IsCullingInvisible ()) ||
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(lastVP.IsDensityCulling () != fVP.IsDensityCulling ()) ||
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(lastVP.IsCullingCovered () != fVP.IsCullingCovered ()) ||
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(lastVP.IsSection () != fVP.IsSection ()) ||
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// No need to visit kernel if section plane changes.
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(lastVP.IsCutaway () != fVP.IsCutaway ()) ||
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(lastVP.GetCutawayPlanes ().size () !=
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fVP.GetCutawayPlanes ().size ()) ||
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// No need to visit kernel if cutaway planes change.
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(lastVP.IsExplode () != fVP.IsExplode ()) ||
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(lastVP.GetNoOfSides () != fVP.GetNoOfSides ()) ||
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(lastVP.GetBackgroundColour ()!= fVP.GetBackgroundColour ())
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) {
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return true;
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}
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if (lastVP.IsDensityCulling () &&
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(lastVP.GetVisibleDensity () != fVP.GetVisibleDensity ()))
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return true;
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if (lastVP.IsExplode () &&
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(lastVP.GetExplodeFactor () != fVP.GetExplodeFactor ()))
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return true;
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return false;
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}
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void G4XXXSGViewer::DrawFromStore(const G4String& source) {
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typedef taj::tree<G4String> SceneGraph;
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typedef taj::tree<G4String>::preorder_iterator SceneGraphPreIterator;
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SceneGraph& sceneGraph =
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static_cast<G4XXXSGSceneHandler&>(fSceneHandler).fSceneGraph;
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// Write to a file for testing...
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static G4int iCount = 0;
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std::ostringstream oss;
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oss << source << '.' << fName << '.' << iCount++ << ".out";
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G4cout << "Writing " << oss.str() << G4endl;
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std::ofstream ofs(oss.str().c_str());
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for (SceneGraphPreIterator i = sceneGraph.beginPre();
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i != sceneGraph.endPre(); ++i) {
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G4int depth = 0;
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SceneGraphPreIterator j = i;
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while (j != sceneGraph.getRoot()) {j = j.parent(); ++depth;}
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ofs << "\nDepth: " << depth;
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ofs << *i;
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}
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ofs.close();
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}
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#endif
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